International Klein Blue

#0010AC

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein registered this color as a trademark in 1957, though the trademark's legal status is not universally recognized. IKB's visual impact comes from its heavy reliance on ultramarine pigment, as well as Klein's matte, synthetic resin binder which allows the pigment to retain its brilliance and intense saturation. The color is known for its captivating depth, often perceived as limitless or infinite. Klein believed that this color embodied his conception of space and aimed to liberate color from form. IKB has since become synonymous with Klein's artistic vision and is widely recognized in art and design circles.

The hex color #0010AC, also known as International Klein Blue (IKB), presents some accessibility challenges, particularly in web design. Due to its deep, saturated nature and low luminance, it may not provide sufficient contrast when paired with lighter colors like white or yellow. This can make text and other visual elements difficult for users with visual impairments, such as low vision or color blindness, to perceive clearly. According to WCAG guidelines, sufficient contrast between text and background colors is essential for readability. To improve accessibility, consider using IKB sparingly, especially for text. If using it for text, ensure it's paired with a very light color that meets the minimum contrast ratio requirements. Alternatively, you could use IKB for larger design elements where contrast is less critical, or incorporate it into interactive elements like buttons and links with clear hover states that improve visibility.

Shades

Digital Color Formats

RGB
0 16 172
RGB0 16 172
Red
Green
Blue
HSL
234.42deg 100% 33.73%
234.4210033.73HSL
Hue
Saturation
Lightness
HWB
234.42deg 0% 32.55%
234.42032.55HWB
Hue
Whiteness
Blackness
hex#0010AC
rgb0 16 172
hsl234.42deg 100% 33.73%
cmyk100% 90.7% 0% 32.55%
hwb234.42deg 0% 32.55%
xyz-d650.08 0.03 0.39
oklch0.3462 0.2266 264.21
oklab0.3462 -0.02 -0.23
CMYK
100% 90.7% 0% 32.55%
10090.7032.55CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.08 0.03 0.39
0.080.030.39XYZ
X
Y
Z
OKLCH
0.3462 0.2266 264.21
0.34620.2266264.21LCH
Lightness
Chroma
Hue
OKLAB
0.3462 -0.02 -0.23
0.3462-0.02-0.23LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons